Intro

The Align Behaviour can be used to set dynamic pivot points by pinning Shapes based on their bounding box. Shapes can then be set to left/ right/ top/ bottom (or somewhere in-between) aligned.

This is useful when, for example, the bottom of a rectangle needs to remain in place as its size increases.

UI

Common Attributes

X - A value of -1 will set pinning to the left of the Shape’s bounding box. A value of 1 will set it to the right.

Y - A value of -1 will set pinning to the bottom of the Shape’s bounding box. A value of 1 will set it to the top.

Example

1. Hold Option/Alt and click the Rectangle tool in the Toolbar to create a default rectangle.
2. In the Attribute Editor, click the + button on the Rectangle's Deformers attribute.
3. Choose Align from the list.
4. Set the Align's Y attribute to 1.

As the Rectangle's Size H (height) is increased/decreased its top will move up and down while its bottom remains in place.